At the end of this stroke, the exhaust valve closes, the intake valve opens, as well as the sequence repeats in another cycle. The intake valve may possibly open up before the exhaust valve closes to permit better scavenging. Other units will also be accustomed to lubricate the cylinder and https://cloudwayui.com/the-ultimate-guide-to-mentor-matching-engines-finding-the-best-mentoring-software/